158564 has 18 divisors (see below), whose sum is σ = 323190. Its totient is φ = 67872.

The previous prime is 158563. The next prime is 158567. The reversal of 158564 is 465851.

It is a happy number.

158564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 153664 + 4900 = 392^2 + 70^2 .

It is not an unprimeable number, because it can be changed into a prime (158563) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 209 + ... + 600.

It is an arithmetic number, because the mean of its divisors is an integer number (17955).

2¹⁵⁸⁵⁶⁴ is an apocalyptic number.

158564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

158564 is an abundant number, since it is smaller than the sum of its proper divisors (164626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

158564 is a wasteful number, since it uses less digits than its factorization.

158564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827 (or 818 counting only the distinct ones).

The product of its digits is 4800, while the sum is 29.

The square root of 158564 is about 398.2009542932. The cubic root of 158564 is about 54.1254513560.

The spelling of 158564 in words is "one hundred fifty-eight thousand, five hundred sixty-four".